Earthquake with magnitude of Md 2.0 on date 27-09-1997 and time 16:36:41 (Italy) in region 8 km E Valtopina (PG)

A magnitude Md 2.0 earthquake occured in region: 8 km E Valtopina (PG), on

  • 27-09-1997 14:36:41 (UTC)
  • 27-09-1997 16:36:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0350, 12.8480 at 7 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Valtopina PG 8 1398 1398
Serravalle di Chienti MC 10 1070 2468
Nocera Umbra PG 10 5839 8307
Monte Cavallo MC 13 145 8452
Foligno PG 15 57155 65607
Sefro MC 15 422 66029
Spello PG 15 8645 74674
Pieve Torina MC 17 1458 76132
Muccia MC 17 915 77047
Sellano PG 17 1079 78126
Fiuminata MC 19 1402 79528
Trevi PG 19 8469 87997
Assisi PG 19 28299 116296
Pievebovigliana MC 20 866 117162
Pioraco MC 20 1134 118296
Fiordimonte MC 20 202 118498

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km NE of Foligno (57155 inhabitants)
38 Km E of Perugia (166134 inhabitants)
55 Km NE of Terni (111501 inhabitants)
81 Km NW of Teramo (54892 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
88 Km NW of L'Aquila (69753 inhabitants)
91 Km S of Fano (60888 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
92 Km SE of Arezzo (99543 inhabitants)
98 Km S of Pesaro (94582 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 2.0
ML-VAX 1.9
1997-09-27
14:36:41
43.035 12.848 7 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 281889
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-27 14:36:41 ± 0.318
Latitude 43.0350 ± 0.0062
Longitude 12.8480 ± 0.0280
Depth (km) 7 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 281889

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 2374.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 182
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00130
Epicentral distance of station farthest from the epicenter (degree) 0.00591
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 281889
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:26:00

ML:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 281889
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.FB9.Z. 1997-09-27T14:37:05.62 10.0 undecidable manual SG 355 0.6549 0.16 0.6
--.MNS.Z. 1997-09-27T14:37:05.15 10.0 undecidable manual SG 190 0.6549 -0.39 0.2
--.ARV.Z. 1997-09-27T14:36:59.77 10.0 undecidable manual SG 8 0.4662 0.4 0.2
--.FB9.Z. 1997-09-27T14:36:55.31 10.0 undecidable manual PG 355 0.6549 -0.13 1.7
--.MNS.Z. 1997-09-27T14:36:55.75 10.0 undecidable manual PG 190 0.6549 0.27 1
--.ARV.Z. 1997-09-27T14:36:51.66 10.0 undecidable manual PG 8 0.4662 -0.26 1.3
--.ASS.Z. 1997-09-27T14:36:47.65 10.0 undecidable manual SG 280 0.1443 -0.15 0.8
--.ASS.Z. 1997-09-27T14:36:45.35 10.0 undecidable manual PG 280 0.1443 0.11 2.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download